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Confirmed9 filings · 8 statesUnverified claimConfirmedEnforcedcl0phigh sensitivity

Merged incident · 9 filings

MASTEC, INC. — August 2025 breach

Clustered 9 filings across 9 jurisdictions · filing window Oct 31, 2025 → Jun 9, 2026. View entity profile → Other incidents for this victim →

⚠ 2 cross-filing discrepancies →Merge100%

Determination

Confirmed

Members

9 filings

States

Affected · reported

25,220

First → last filing

Oct 31, 2025 → Jun 9, 2026

Merge confidence

100%

incident inc_d27493c7b8704576 · merged by human · confidence 100%

Confirmed breach. Merged as one breach: 8 regulatory filings and 1 unverified claim. The filings describe unauthorized access. Intrusion Aug 1, 2025–Aug 31, 2025, discovered Oct 1, 2025 — the first regulatory filing landed 246 days later (flagged late). 25,220 individuals reported across the linked filings. Data reported: Government ID, Identity (basic), Financial account, and 4 more. Notifications rolled out on a 220-day schedule across 8 filings beginning Oct 31, 2025. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Notification delay

246days

Discovered → first regulatory filing

Discovery variance

204days

Range of discovered_at dates across filings

Leak precedence

215days before filing

Days between the first leak-site claim and the first regulatory filing. Positive = the claim came first (public exposure before disclosure). Negative = the claim trailed the filing, so there was no pre-disclosure leak. Counts regulatory filings only — press coverage is not a regulatory disclosure.

Filing span

220days

Time between earliest and latest filing

Not recorded for this incident

Materiality delta · SEC filing delay — no SEC 8-K in this cluster.

Regulatory clocksLeak gap✗ Leak >180dMassachusetts✗ MA AG >90dFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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